SYSTIMAX® Solutions from CommScope May 2017
Universal connectivity grid design guide
2 Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope
Contents
Introduction 3
Commercial building network overview 3
Zone cabling 4
Universal connectivity grid 4
UCG cell size 5
UCG horizontal cabling 7
Integrating building systems with unique architectures into UCG 9
Consolidation points (CPs) 9
Planning connectivity for UCG cells 10
Port counts and space usage 11
The UCG: An intuitive solution for today’s networks 11
Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope 3
Introduction
The modern workplace is undergoing a rapid transformation toward a more dynamic model. Changing behaviors and usage patterns demand flexibility in the layout of offices, collaboration spaces, conference rooms and other common areas. Wired and wireless technologies are key enablers of this transformation; the efficiency of modern intelligent buildings is becoming highly dependent on an integrated IT and facilities infrastructure to ensure connectivity in all the new ways workplaces require it to be available.
This transformation is driving a transition in telecommunications
cabling—from workstation-centric to distributed device-centric,
with an increasing number of connectivity points located in or near
the ceiling. In addition to the user connectivity requirements at
the work area locations, connectivity points in other locations are
required to support the growing use of technologies such as:
· Wireless technologies (predominantly Wi-Fi and in-building wireless solutions such as DAS and small cells) that require additional connections in the ceiling for access points throughout the space
· Security and access control systems that are increasingly supported by ceiling connectivity for PoE-powered cameras, controllers and card readers
· Space and energy management systems that rely on distributed sensors throughout the space to optimize space utilization and support occupancy-based energy management via integration with network-controlled LED lights and HVAC systems
· Digital displays that are increasingly being deployed for uses ranging from space and energy monitoring to displaying the location of unoccupied rooms and personnel
· An ever-increasing ecosystem of other various connected devices and services comprising the Internet of Things (IoT)
Given this evolving connectivity landscape, IT and facilities
managers must consider new strategies for integrating the growing
wireless requirements and the increasing number and types of
networked devices into the core network. This involves rethinking
how to deploy a uniform, cost-effective, yet flexible cabling
infrastructure throughout the facility.
This document explores the emergence of the universal
connectivity grid—a zone cabling-based approach created to
support a wide range of networked applications through a
common infrastructure in commercial buildings—and provides
design guidelines and recommendations to facilitate infrastructure
planning and deployment.
Commercial building network overview
Within a commercial building, the infrastructure for communications
networks consists of two basic segments: the backbone (or riser)
and the horizontal. The backbone connects telecommunications
rooms (TRs) to a centrally located equipment room (ER). Backbone
media is typically OM3, OM4 or OM5 multimode fiber-optic cable to
support high-bandwidth applications, although copper cabling may
also be deployed for lower bandwidth applications such as building
management systems (BMS).
The horizontal section of the network includes the connection between
a patch panel in the TR or ER and a telecommunications outlet (TO) or
multi-user telecommunications outlet assembly (MUTOA) in the work
area, and the connection between the TO
or MUTOA to an end device (Figure 1).
The TIA/EIA 568 standard sets 90 meters (295 feet) (plus a total of
10 meters [33 feet] for the patch and equipment cords) as the maximum
horizontal channel length to support high-bandwidth applications.
4 Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope
Zone cabling
An alternative horizontal distribution strategy, known as zone
cabling, utilizes cable runs from the floor-serving TR to specific
building zones or “service areas.” A consolidation point (CP) within
each service area establishes a permanent intermediate connection,
with fixed cabling installed between the TR and CP. Zone cords
provide wired connectivity from the CP to the TO for each required
service, device or application, as shown in Figure 2.
By deploying a permanent horizontal link between the TR and the
CP at the service area, a zone distribution system provides greater
flexibility for reconfiguring open office spaces, placing distributed
endpoint devices, staging installations, or locating connectivity in
easily accessible locations.
While a zone strategy may require greater capital expenditure on
connecting hardware as a function of installation over traditional
point-to-point cabling, savings can be realized by using common
pathways for the diverse systems to be supported. Plus, the
additional flexibility it provides for moves, adds and changes can
result in long-term operational benefits compared to the traditional
approach of deploying separate and independent cabling systems
for various applications—particularly in constantly evolving open-
office environments.
When designing a zone cabling deployment, standards recommend
that the CP be placed at least 15 meters (50 feet) from the TR, while
maintaining the maximum 100-meter channel length. In cases where
100 meters is not enough, hybrid fiber-optic cable can be used to
power remote devices such as IP cameras over greater distances.
Universal connectivity grid
A newly established design practice called the universal connectivity
grid (UCG) evolves the concept of zone cabling by dividing the
Figure 2: An example of zone cabling and the CP connection to the patch panel
usable floor space into a grid of evenly sized service areas, or cells.
A CP is located within each cell, providing maximum flexibility for
connecting, adding and moving devices.
Both new construction and retrofits are ideal opportunities for
deploying a uniform infrastructure like the UCG. Adoption of the
UCG approach means that moves, adds, changes and upgrades
are greatly simplified—requiring less material and labor and
reducing OpEx over the life of the installation. In addition, these
modifications require less disruption of the workspace, minimizing
negative impact on employee productivity when deploying or
reconfiguring services.
By integrating all services into one architecture and leveraging
low-voltage technologies, installation and ongoing operational
costs can be reduced.
Figure 3: Floor space of office divided into evenly spaced cells
Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope 5
UCG cell size
The maximum recommended cell size for UCG is 60 feet by
60 feet (18.3 meters by 18.3 meters), based on the TIA-162-A
recommendations for a grid of evenly spaced cells designed to
support easy deployment and upgrades of wireless access points
(WAPs) as shown in Figure 4 (similar recommendations exist in ISO/
IEC TR 24704, which are shown in Figure 5). Smaller 40-foot x
40-foot (12.2 meter x 12.2 meter) cells should be considered when
Wi-Fi is expected to be used as a primary network access method,
or in high-user-density areas.
By defining UCG cells based on wireless coverage areas, UCG is
ideally suited to support a diverse set of wireless applications
(Figure 6), but can also be deployed as an overlay to the
traditionally wired LAN architecture to specifically support all
ceiling-based applications (Figure 7). In more robust designs, UCG
can be used as a common architecture for both ceiling-based
applications and workstation cabling (Figure 8).
In order to serve increasingly demanding applications in the
building, including Wi-Fi, in-building wireless, and Power over
Ethernet (PoE), Category 6A is the recommended cable media for
the permanent cabling from the TR to each zone in the UCG.
Figure 6: The Universal Connectivity Grid supporting only wireless access points, with other ceiling-based and workstation applications supported by point-to-point cabling
Figure 4: TIA TSB-162-A recommended cell for wireless local area networks (WLANs)
Figure 5: ISO/IEC TR 24704 recommended cell for 802.11
6 Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope
Figure 7: The Universal Connectivity Grid uniting all ceiling-based application cabling through a consolidation point with work station cabling deployed in a conventional star topology separately through a raised floor
Figure 8: The Universal Connectivity Grid uniting all work station and ceiling-based application cabling through a consolidation point
Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope 7
UCG horizontal cabling
The horizontal channel design for the UCG is based on the standard
100-meter, four-connection channel, as illustrated in Figure 9. This
will commonly be used for workstation cabling or connecting IP
devices such as projectors or digital displays that may require a wall-
mounted outlet. For runs longer than 100 meters, powered hybrid
fiber-optic cable makes it possible to connect more remote devices,
such as IP cameras or remote Wi-Fi access points.
Figure 9: Structured cabling channel with a zone cord from CP to TO
Figure 10: Structured cabling channel with a patch cord from CP to device
In other scenarios, however, ceiling-mounted devices—such as
occupancy sensors, wireless access points or security cameras—may
use the CP as a static termination point, and not require installation
of an additional outlet. In these cases, the endpoint device will not
use a zone cord, but will be connected directly to the CP with a
patch cord, as in Figure 10.
8 Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope
Ceiling connector assemblies provide a flexible way to add connected
devices with the simple use of insulation-displacement connection
(IDC) technology and factory-terminated patch cords. Ceiling
connector assemblies remove the need to perform problematic
and time-consuming modular plug field terminations—a procedure
complicated by tight quarters when working inside the ceiling. The
use of a ceiling connector assembly to connect a Wi-Fi access point
is shown in Figure 11.
When designing channels for UCG, the maximum horizontal distance
must take into account the expected length of the zone cords to
the outlet at the work area. When the length of cordage (including
equipment cords, zone cords and cross-connect cords) exceeds
10 meters, the maximum channel length should be calculated
according to the formula:
Total cord length in meters ≤ (102-horizontal)/1.2
Horizontal length in meters ≤ 102 - 1.2 (total cord length)
One must also take into account the higher attenuation allowed by
standards for flexible cordage, including the expected type and length
of the zone cords to the outlet at the work area. For cases when the
total length of cordage (including equipment cords, zone cords and
cross-connect cords) exceeds 10 meters, cabling standards specify
that the maximum channel length should be calculated as follows:
TIA calculation (for cordage with 20 percent higher attenuation):
Total cord length in meters ≤ (102-horizontal)/1.2
Horizontal length in meters ≤ 102 - 1.2 (total cord length)
ISO/IEC calculation (for cordage with 50 percent higher attenuation):
Total cord length in meters ≤ (105-horizontal)/1.5
Horizontal length in meters ≤ 105 - 1.5 (total cord length)
When the UCG is intended to support workstation applications in
a 60-foot x 60-foot grid, a conservative estimate of 23 meters for
the zone cords can be established by estimating a 15-meter radius in
the ceiling to the farthest point where cables would run down a wall
or pole, and adding eight meters for routing of the cable to the TOs.
Using the TIA formula above—and assuming an additional
10 meters of cross-connect and equipment cords with 20 percent
higher attenuation than cable—the maximum horizontal distance
for this configuration is 62 meters, as shown in Figure 12.
When the UCG is intended to support workstation applications in
a 40-foot x 40-foot grid, a conservative estimate of 20 meters for
the zone cords can be established by estimating a 12-meter radius
in the ceiling to the farthest point where cables would run down a
wall or pole, and adding eight meters for routing of the cable to
the TOs. Using the TIA formula above—and assuming an additional
10 meters of cross-connect and equipment cords with 20 percent
higher attenuation than cable—the maximum horizontal distance
for this configuration is 66 meters.
Figure 12: Example UCG channel distance for supporting work station cabling in a 60 foot x 60 foot cell
Figure 11: Ceiling connector assembly application
Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope 9
Integrating building systems with unique architectures into UCG
While optimal flexibility comes from using IP connectivity for as
many endpoints as possible, some systems may also require a
gateway to integrate non-IP devices onto the network (Figure
13), or a unique type of non-category cable (Figure 14). For
these systems, the category cabling must comply with horizontal
distance requirements for the structured cabling channel. Note
also that there may be additional requirements specific to the
system being installed.
Consolidation points (CPs) Determining the type and size of CPs utilized for each cell depends
on the number of devices intended to be served; ease of accessibility
requirements; whether the CP will also house gateways or other
active components; and building code requirements.
CPs should be sized to accommodate the amount of cabling needed
per UCG cell plus spare capacity for future additions. The section
“Planning connectivity for UCG cells” includes recommendations
for the number of ports that should be planned for different
applications. As a general guideline, though, planning in 20 to 50
percent spare capacity provides sufficient flexibility for future growth.
Some nontypical cabling needs, such as IP gateways, may require
active electronics. In this case, power will be needed at the zone.
There are two options for this scenario:
1. Provide a zone enclosure that accommodates power. The
outlet will need to be provided in the enclosure to meet code
requirements and space in the enclosure shall be provided to
accommodate the electronics power cabling.
2. Provide an enclosure adjacent to the zone enclosure that will
house the electronics and power outlet and meet all the space’s
UL and plenum requirements.
Systems that require support for active electronics may include
A/V systems with media converters or transceivers, BAS or lighting
control systems with media gateways, PON systems with distributed
ONT devices, or audio paging or sound masking systems with local
distributed repeaters and amplifiers.
Figure 13: UCG channel for systems requiring gateway for non-IP devices
Figure 14: UCG channel for BAS system, which may use non-category cabling for endpoint connections
Figure 15: UCG channel for A/V system requiring transceivers
While some A/V systems utilize standard category cabling, others
may require the use of transceivers or other conversion devices as
shown in Figure 15.
10 Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope
Application Ports per endpoint Notes/Additional considerations Ports per cell
Work Station Two ports per desk Assumes 36 workstations per 60 foot x 60 foot cell 72 ports
Wi-Fi Two ports per WAPPlan for two access points per cell to accommodate future capacity increases
4 ports
In-building wireless Two ports per AP Plan one spare port to accommodate future needs 2 ports
Paging and sound maskingOne to four ports
per systemSystem architectures vary. Reference manufacturer’s requirements. 1-4 ports
Low-voltage lighting with integrated occupancy sensors
One port per fixture and wall switch
Assumes 9.5-foot ceiling height with connections for wall switches or sensors in common areas
40-48 ports
Occupancy sensors One port per sensorPlan one sensor per desk, with additional sensors in hallways and other common areas spaced roughly 10 feet to 15 feet apart
36-48 ports
Application Ports per endpoint Notes/Additional considerations Ports per cell
Work Station Two ports per desk Assumes 16 workstations per 40 feet x 40 feet cell 32 ports
Wi-Fi Two ports per WAPPlan for two access points per cell to accommodate future capacity increases
4 ports
In-building wireless Two ports per AP Plan one spare port to accommodate future needs 2 ports
Paging and sound maskingOne to four ports
per systemSystem architectures vary. Reference manufacturer’s requirements. 1-4 ports
Low-voltage lighting with integrated occupancy sensors
One port per fixture and wall switch
Assumes 9.5-foot ceiling height with connections for wall switches or sensors in common areas
20-25 ports
Occupancy sensors One port per sensorPlan one sensor per desk, with additional sensors in hallways and other common areas spaced roughly 10 feet to 15 feet apart
16-24 ports
Application Ports per endpoint Notes/Additional considerations
Digital displaysOne to two ports per
display
Total port counts for digital displays may vary greatly depending on location and application. When planning for digital signage, consider building directories, dashboards, interactive kiosks, security desks, IPTVs, presentation systems and conference room reservation displays.
Building automation systems
One to two ports per controller or IP endpoint
As a rough planning guideline, ANSI/TIA/EIA-862 suggests planning for three BAS devices per BAS coverage area (25 square meters for most enterprise environments), but the number of devices will vary depending on the specific systems being deployed.
Security camerasOne to two ports per
cameraThe number and location of security cameras will vary depending on the type of space and desired coverage (wide vs. detailed), as well as building features that may obstruct the view of certain locations.
Access controlOne to four ports
per entry
Access control systems may be deployed at main building entries, as well as throughout the building for controlling access to different floors via stairways. Additionally, consider requirements for securing individual spaces such as conference rooms, private offices, labs or fitness rooms. When planning ports for access control, consider door sensors, exit buttons, keypads and badge readers.
Planning connectivity for UCG cells The number of CPs needed per UCG cell will vary depending on
the specific type and quantities of systems deployed, as well as
environmental factors such as furniture layout and the configuration
of walls and corridors. The following recommendations are intended
to serve as general guidelines and considerations for predesign
planning of port counts to support common building systems in an
open office environment.
Some systems commonly deployed in buildings include widely-distributed endpoint devices, which are less consistent in placement. As a
practical matter, such devices should be located independently of the grid, but mapped to the appropriate CP within the cell they reside.
The following table provides considerations and recommendations for planning ports per device for these systems.
Table 1: Recommended port counts for planning 60 foot x 60 foot UCG deployments in open office spaces
Table 2: Recommended port counts for planning 40 foot x 40 foot UCG deployments in open office spaces
Table 3: Recommended port counts for other systems
Tables 1 and 2 provide recommended port counts for planning
systems that are consistently deployed throughout open office
spaces with 60-foot x 60-foot or 40-foot x 40-foot cells. Table 3
provides recommended port counts and considerations for planning
systems that may be less consistently deployed throughout the
building or have potentially wide-ranging port counts.
Universal connectivity grid design guide SYSTIMAX® Solutions from CommScope 11
Port counts and space usage An additional factor influencing port counts is the type and intended
usage of each space. The following considerations provide general
guidelines for planning applications to be deployed within common
types of building spaces.
Open office spaces should adhere to the grid for all ceiling
connectivity, and, optionally, adhere to grid for workstation cabling.
· Within each cell, plan cabling for workstations, Wi-Fi access points, in-building wireless, low-voltage lighting and/or occupancy sensors.
· In select cells, plan cabling for security cameras, BAS devices and miscellaneous networked peripherals (such as printers).
Open transitional spaces (lobbies, atria, waiting areas, connecting
corridors) should adhere to the grid for all ceiling connectivity, and
may be utilized for providing connectivity to hard-walled offices
(see below).
· Within each cell, plan cabling for Wi-Fi access points, in-building wireless, BAS devices, low-voltage lighting and/or occupancy sensors.
· In select cells, plan cabling for security cameras, access control systems (card readers, number keypads, exit buttons) and digital displays.
Hard-walled offices may utilize the nearest CP or be treated
as individual cells depending on size and overall layout. When
accessibility of connectivity for maintenance is a concern, it may be
preferable to locate CPs in an adjacent open transitional space.
· Within each office, plan cabling for workstations, BAS devices, low-voltage lighting and/or occupancy sensors.
· In select hard-walled offices, BAS devices, security cameras or wireless access points (Wi-Fi or in-building wireless) may be required.
Small conference rooms may utilize the nearest CP or be treated
as individual cells depending on size and overall layout. When
accessibility of connectivity for maintenance is a concern, it may
be preferable to locate CPs in an adjacent open transitional space.
· Within each small conference room, plan cabling for VoIP phone and/or PC, Wi-Fi access points, in-building wireless, projector or digital display (for presentations and/or room scheduling systems), low-voltage lighting and/or occupancy sensors.
Large conference rooms should adhere to the grid for all ceiling
connectivity. When accessibility of the zone connectivity for
maintenance is a concern, it may be preferable to locate CPs in
an adjacent open transitional space.
· Within each large conference room, plan cabling for VoIP phone and/or PC, Wi-Fi access points, in-building wireless, BAS devices, projector or digital displays (for presentations and/or room scheduling systems), low-voltage lighting and/or occupancy sensors.
Auditoria and large meeting spaces should adhere to the grid
for all ceiling connectivity.
· Within each cell, plan cabling for Wi-Fi access points, in-building wireless, BAS devices, low-voltage lighting and/or occupancy sensors.
· In select cells, plan cabling for VOIP phone and/or PC, A/V systems and security cameras.
The UCG: An intuitive solution for today’s networks Commercial and enterprise spaces continue to evolve in their
function, forcing a corresponding evolution in their form.
More connected devices, more mobile employees and more
IoT devices and services create an environment where a
preplanned, forward-thinking infrastructure approach is the
only one that makes sense.
The UCG, properly deployed, can provide flexible, scalable
performance to users, devices and applications across an entire
building, ensuring that power and connectivity will be where they
are needed, backed by the speeds and bandwidth that emerging
applications and devices will require. For this reason, the UCG
is an intuitive solution for today’s—and tomorrow’s—high-
performance networks.
Contact your CommScope representative today to learn more about how the UCG can add value to your next new deployment or retrofit.
Contact CommScope
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Additional information
CommScope provides additional information on cabling design for
commercial spaces at CommScope.com. These documents include:
· Enterprise design guide
· General design guide for building automation systems (BAS)
· Honeywell controls enterprise buildings Integrator system over CommScope cabling
· Johnson Controls Metasys system over CommScope SYSTIMAX® cabling
– LonWorks® design guide
– SYSTIMAX cabling design and installation guidelines for the ION®-E Solution
· Implementation considerations for HDBaseT networks
commscope.comVisit our website or contact your local CommScope representative for more information.
© 2018 CommScope, Inc. All rights reserved.
Unless otherwise noted, all trademarks identified by ® or ™ are registered trademarks, respectively, of CommScope, Inc. This document is for planning purposes only and is not intended to modify or supplement any specifications or warranties relating to CommScope products or services. CommScope is committed to the highest standards of business integrity and environmental sustainability with a number of CommScope’s facilities across the globe certified in accordance with international standards, including ISO 9001, TL 9000, and ISO 14001. Further information regarding CommScope’s commitment can be found at www.commscope.com/About-Us/Corporate-Responsibility-and-Sustainability.
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